Title :
Design and optimization of a 1.3/1.55-μm wavelength selective p-i-n photodiode based on multimode diluted waveguide
Author :
Magnin, V. ; Giraudet, L. ; Harari, J. ; Decoster, D.
Author_Institution :
Inst. d´Electronique de Microelectronique et de Nanotechnologie, UMR CNRS, Villeneuve d´Ascq, France
Abstract :
This letter demonstrates a new solution to achieve low-cost, highly integrated, and reliable InP-based p-i-n photodiodes for wavelength-division-multiplexing optical networks, absorbing 1.55-μm wavelength and transparent to 1.3 μm. It is based on a multimode diluted waveguide (MDW) combined with an evanescently coupled photodiode. The overall structure is optimized using a genetic algorithm linked to a beam propagation method software. The computed responsivity of the MDW photodiode is 0.86 A/W at 1.55 μm, and the 1.3/1.55-μm optical crosstalk is better than -20 dB (-40-dB electrical). The proposed device is designed for hybridization on silicon platform for low-cost modules, with potential application up to 10 Gb/s.
Keywords :
III-V semiconductors; genetic algorithms; indium compounds; optical communication equipment; optical crosstalk; optical design techniques; optical fibre networks; optical waveguides; p-i-n photodiodes; semiconductor device models; semiconductor device reliability; wavelength division multiplexing; 1.3 mum; 1.55 mum; beam propagation method; evanescently coupled photodiode; genetic algorithm; hybridization; multimode diluted waveguide; optical crosstalk; responsivity; wavelength selective p-i-n photodiode; wavelength-division-multiplexing optical networks; Design optimization; Genetic algorithms; Optical computing; Optical crosstalk; Optical fiber networks; Optical propagation; Optical waveguides; Optimization methods; PIN photodiodes; Silicon; Evanescent coupling; multimode waveguides; optical network; p-i-n photodiodes; wavelength selective; wavelength-division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.839396
